Machine fob



UNITED STATES PATENT OFFICE.

MARINUS P. CRAPO, OF BUCKSPORT, CALIFORNIA.

MACHINE FOR STRIKING UNBURNED BRICKS.

Specification of Letters Patent No. 15,329, dated Ju1y 15, 1856.

To all whom it may concern:

Be it known that I, MARINUS P. CnAro, ofthe county of Humboldt and Stateof California, have invented a new and useful Machine for StrikingUnburned Bricks; and I do hereby declare that the following is a full,clear, and exact description thereof, reference beinghad to the annexeddrawings, making a part of this specilication, and to the letters andfigures marked thereon, in which the same parts are always marked by thesame letters or figures.

My machine consist of a platform A; a mold bed B (with one end and thetop open) fastened thereto; a hopper C fitting exactly on the top of B,and supplying the mold with mortar; a follower D moved vertically up anddown in C by means of the lever E acting on the pit-mans P, and S, forthe purpose of forcing the mortar into the mold K; an apron F, one edgeresting on the top of the right side of the hopper C, the othersustained by the upright U on the cross-bar W at such an elevation thatthe mortar when poured on it will readily slide down it into the hopper;a striker G on its bed I-I worked by the lever I which gives to its edgec a horizontal motion parallel to itself the ends of said cutter slidingi'n grooves on opposite ends of the hopper one of which is at h in theelevation and section on 12, and 13 of plan, which strikes the morta-rfrom the top of the mold when filled, as shown in the supplementaryiigure in red lines, and gives the upper surfaces of the bricks a smoothsurface.

In the drawings annexed A- is the platform on which the other parts ofthe machine are fastened; B, the mold box having its top and one endopen; C, the hopper in two parts firmly banded together the lower partresting on the top of the mold bed, the inner edges of the openingthereof coming just far enough within those of the said top to covert-he edges of the mold when in its bed, as shown by darker shadingmarked a a in the elevation and section on the annexed drawing. Thesides of this lower part incline out-ward as they rise and meet those ofthe upper part of the hopper which are vertical.

D, the follower, is a board itting closely into the upper part of C inwhich it works vertically by means of the lever E attached to the pitmenS and P which are themselves fastened to the top of D by the eyes r andt lixed on the longitudinal midline thereof one at the middle and the.other half way between this and the end of the follower, to which eyesthe lower ends of said pitmen are attached by bolts around which theycan revolve; a button Z) prevents the follower from being drawn up outof the hopper; the follower is used to force and press the clay into themold; E, a wooden lever of suitable dimensions one of which passesthrough and freely works in a mortise in the top of the upright post Oaround a rivet bolt 0'; the center being mortised to receive the pitmanP immediately outside 0f which is a bent clamp X leaving between it andthe lever an aperture of sufficient size to receive the end of thecurved pitman S, which passing through it by the side of the pitman Pcoming through a mortise in the lever, is secured by the bolt Cr Garound which they can both freely turn.

F, the apron, is an inclined plane on which the mortar for filling thehopper, is placed. It is supported by, as before stated, by the top ofthe hopper and the cross-bar W and is steep enough to make the mortarrun off freely. The lower edge of the apron is placed low enough to giveplenty of room for the mortar to run into the hopper under the followerD when raised so that its top surface brings it against the button Z),on the upper right hand edge of the hopper.

G, the striker, is an iron (or other metal plate) having the inner underedge beveled from bottom to top; its ends sliding in grooves passingrbetween the bed mold B and hopper C, the ends of which pass over theopening for the bed-mold as shown on one side at it (elevation section).The striker slides backward and forward in the grooves on H, thestriker-bed, which is made of the same height as B the moldbed, and maybe solid or hollow. On its back edge at its middle point there is an eyem (see supplementary figure) attached by bolts which receives thestraight end of M. A bent strap 3 receives the end of I, the lever,which works freely therein around the p ivot p, bearing the eyed claps2, which receives one end of L, a short pitman, the other end of whichrests in the bent end of M both ends being secured by pivots aroundwhich it can freely turn. Iron is best for this; K, the mold, slidestightly into the bed; M, the bent iron strap, aforesaid, attached at itsstraight end to the eye m, on

the striker Gr and at the other to the pitman L, passes under the curvediron arc V which allows it to move freely but prevents it from risingwhen the machine is worked.

N, is an iron st-anchion attached to the side of the hopper with a notchor ledge on one side so placed that it can support the end of the leverF when the follower D is raised against b the button; O, an upright postbearing the fulcrum of the lever E; P, a straight iron pitman already'described; S, a bent pitman working P on the follower' D; T, a woodhandle passing through a mortise in the end of the lever I; V, anupright post sustaining t-he cross-bar W; V,

the circular traverse above described.

To operate my machine the parts being made and put together asdescribed, shove the mold K into the bed B; throw the handle I backsliding the striker to back in its groove until the edge o uncovers the`mold as' shown, a c of elevation section;

raise the lever E until the follower brings up against the button andthe lever on the notch or ledge on the iron stanchion N; pour mortar onthe apron F; it will slide down it under the follower D into hopper Cand thence into and fill the molds. Then pull down on T as strongly asyou desire. Next seize and bring forward the end of the lever. Thebeveled edge of the striker causes it with freedom and ease to rise overthe side of the mold on which without the bevel it would catch or chafeas soon as a little sand or clay got into the mold bed under the mold.The striker Gr, brought forward by I, passes under and separates themortar in the hopper from that in the mold, and at the end of the leverstroke stands as shown in the supplementary figure. The beveled edge ofthe striker Gr also causes it to run over and press down into the moldany small lumps gravel, stones or straw and thus render the surface morefull and firm than it would otherwise be.

While by this arrangement the tender operates the machine without beingobliged to move from his position in front of the bold-box, obviously avery great advantage.

What I claim as my invention and wish to secure by Letters Patent is-Operating the follower D, and striker G, p

by means of mechanism constructed and arranged as above described.

l M. P. CRAPO. Witnesses:

JAS. C. MURDOCH, A. J. McDoNALD.

